import 'dart:async';

import 'package:enjoy_plus/utils/eventbus.dart';
import 'package:enjoy_plus/utils/http.dart';
import 'package:enjoy_plus/utils/toast.dart';
import 'package:enjoy_plus/utils/token.dart';
import 'package:flutter/material.dart';



class LoginPage extends StatefulWidget {
  const LoginPage({super.key});

  @override
  State<LoginPage> createState() => _LoginPageState();
}

class _LoginPageState extends State<LoginPage> {




  // 1. 实现倒计时
  int _countdown = 60;
  bool _isCountingDown = false;
  Timer? _timer;
  void _startCountdown() {
    if (_isCountingDown) {
      return;
    }
    _isCountingDown = true;
    _timer = Timer.periodic(const Duration(seconds: 1), (timer) {
      setState(() {
        if (_countdown > 0) {
          _countdown--;
        } else {
          _isCountingDown = false;
          _countdown = 60;
          timer.cancel();
        }
      });
    });
  }

  @override
  void deactivate() {
    super.deactivate();
    _timer?.cancel();
  }

  

    // 2. 获取验证码
  void _getVerificationCode() async {
    // 2.1 校验手机号
    if (_phoneController.text.isEmpty) {
      return ToastUtil.showError('请输入手机号码');
    }

    RegExp regExp = RegExp(r'^1[3-9]\d{9}$');
    if (!regExp.hasMatch(_phoneController.text)) {
      return ToastUtil.showError('请输入正确的手机号码');
    }

    // 2.2 调用获取验证码接口
    try {
      var res = await http.get('/code', params: {
        'mobile': _phoneController.text,
      });
      
      // 添加空值检查
      if (res == null) {
        return ToastUtil.showError('网络请求失败');
      }
      
      if (res['code'] != 10000) return ToastUtil.showError('获取验证码失败');
      ToastUtil.showSuccess('验证码已发送');

      // 延迟执行
      Future.delayed(const Duration(seconds: 2), () {
        if (res['data'] != null && res['data']['code'] != null) {
          _codeController.text = res['data']['code'];
        }
      });

      // 2.3 开始倒计时
      _startCountdown();
    } catch (e) {
      ToastUtil.showError('获取验证码失败: ${e.toString()}');
    }
  }

// 3. 提交登录信息
  void _submit() async {
    // 3.1 校验手机号
    if (_phoneController.text.isEmpty) {
      return ToastUtil.showError('请输入手机号码');
    }
    if (! RegExp(r'^1[3-9]\d{9}$').hasMatch(_phoneController.text)) {
      return ToastUtil.showError('请输入正确的手机号码');
    }

    // 3.2 校验验证码
    if (_codeController.text.isEmpty) {
      return ToastUtil.showError('请输入验证码');
    }
    if (! RegExp(r'^\d{6}$').hasMatch(_codeController.text)) {
      return ToastUtil.showError('请输入6位验证码');
    }
    
    // 3.3 调用登录接口
    try {
      final res = await http.post('/login',  {
        'mobile': _phoneController.text,
        'code': _codeController.text,
      });
      
      // 添加空值检查
      if (res == null) {
        return ToastUtil.showError('网络请求失败');
      }
      
      if (res['code'] != 10000) return ToastUtil.showError(res['message'] ?? '登录失败');
      
      // 检查token是否存在
      if (res['data'] == null || res['data']['token'] == null) {
        return ToastUtil.showError('登录失败: 未获取到token');
      }
      
      // 3.4 存储token
      TokenManager().saveToken(res['data']['token']);
      ToastUtil.showSuccess('登录成功');
      
      // 3.5 返回到上一页
      if (_timer != null) {
        _timer!.cancel(); // 注意清除定时器
      }
      Navigator.pop(context);

      // 3.6 通知个人中心重新获取数据
      eventBus.fire(RefreshMine());
    } catch (e) {
      ToastUtil.showError('登录失败: ${e.toString()}');
    }
  }


 final TextEditingController _phoneController = TextEditingController();
  final TextEditingController _codeController = TextEditingController();

  // _submit() {
  //   print('手机号：${_phoneController.text}');
  //   print('验证码：${_codeController.text}');
  // }



  @override
  Widget build(BuildContext context) {





    
    return Scaffold(
      backgroundColor: Colors.white,
      appBar: AppBar(
        title: const Text('登录'),
        backgroundColor: Colors.transparent,
        centerTitle: true,
      ),
      body: Container(
        padding: const EdgeInsets.all(20),
        child: Column(
          mainAxisAlignment: MainAxisAlignment.start,
          children: [
            const Row(
              children: [
                Text(
                  '登录',
                  style: TextStyle(
                    fontSize: 25,
                    fontWeight: FontWeight.bold,
                  ),
                )
              ],
            ),
            const SizedBox(height: 10),
            const Row(
              children: [
                Text(
                  '加入享+, 让生活更轻松',
                  style: TextStyle(fontSize: 15),
                )
              ],
            ),
            const SizedBox(height: 30),
            Row(
              crossAxisAlignment: CrossAxisAlignment.center,
              children: [
                 Expanded(
                  child: TextField(
                    controller: _phoneController,
                      keyboardType: TextInputType.phone,
                      maxLength: 11,
                    decoration: InputDecoration(
                      labelText: '手机号',
                      hintText: '请输入手机号',
                    ),
                  ),
                ),
                ElevatedButton(
                  style: ElevatedButton.styleFrom(
                    backgroundColor: Colors.white,
                    shadowColor: Colors.transparent,
                    foregroundColor: const Color.fromARGB(255, 85, 145, 175),
                    minimumSize: const Size(100, 50),
                  ),
                  onPressed: () {
                    //
_getVerificationCode();
                      //  _startCountdown();
  },
  child: _isCountingDown
      ? Text('$_countdown s后重新获取',
          style: const TextStyle(color: Colors.grey))
      : const Text('获取验证码'),
                  // },
                  // child: const Text('获取验证码'),
                ),
              ],
            ),
            const SizedBox(height: 8),
             TextField(
                 controller: _codeController,
                keyboardType: TextInputType.number,
                maxLength: 6,
              decoration: InputDecoration(
                labelText: '验证码',
                hintText: '请输入6位验证码',
              ),
            ),
            const SizedBox(height: 8),
            const Row(
              children: [
                Text(
                  '未注册手机号经验证后将自动登录',
                  style: TextStyle(fontSize: 12, color: Colors.grey),
                ),
              ],
            ),
            const SizedBox(height: 50),
            Row(
              children: [
                Expanded(
                  child: ElevatedButton(
                    style: ElevatedButton.styleFrom(
                      backgroundColor: const Color.fromARGB(255, 85, 145, 175),
                      minimumSize: const Size(100, 50),
                    ),
                    onPressed: () {
                      _submit();
                    },
                    child: const Text(
                      '登录',
                      style: TextStyle(
                        color: Colors.white,
                        fontSize: 20,
                      ),
                    ),
                  ),
                )
              ],
            )
          ],
        ),
      ),
    );
  }
}
